Apparatus for cutting material



\ APPARATUS FOR CUTTING 'MATERIAIJ Filed Feb. 12, 1946 2 Sheets-Sheet l I 5 o //v VENTOff v. A. amaze/v ATTORNEY Feb 17, 1948. v, RAYBURN 2,436,179

APPARATUS FOR CUTTING MATERIAL Filed Feb. 12, 1946 I 2 Sheets-Sheet 2 //v l/ENTOR 1/. A. AA YBUAW A TTORNE V Patented Feb. 17, 1948 2.436.119 A mans-res roa cu'r'rmo mrsamn Vincent A. Rayburn,

Western Baltimore, Md., assignor to Company, Incorporated. New

York, N. Y., a corporation of New York Application February 12,1946. Serial N0. 647,150

is (Cl. 164-'8l)' This invention relates to apparatus for cuttin material, and more particularly to apparatus for cutting a-strlp from a sheet of material;

In processing of rubber or rubber-like com-- pounds, such compounds are sometimes mixed and rolled in a rubber mill which rolls the combound into the form of a sheet. The sheet is sometimes cut into a continuous strip which is drawn from the mill. In the past, it has been ciliilcult to gage the thickness of the strip as it is taken oil the mill in order to keep the strip from being too thick. Also, strips of compounds of yp s which adhere tightly to the mill have been dlflicult to peel oil of the mill. while strips of compolmds of types which adhere very little to the mill tend to sag as they are formed and thereby tend to fold as they are advanced from the mill.

An object of the invention is to provide new and improved apparatus for cutting articles.

.An apparatus forming a specific. embodiment of the invention includes a pair ofspaced cutting discs mounted rigidly on a shaft. A peeler rollv is rotatably mounted on the shaft between the cutting discs. The ends-of the shaft are mounted in a pair of self-aligning bearings, which are urged individually toward a mill roll which sup- 2 i Fig. 1 .is a fragmentary front elevation of an apparatus forming one embodiment of the inports a sheet of material. The cutting discs serve to cut a strip from the sheet of material and the peeler roll limits the depth of cut of the cutting discs and thereby limits the thickness .of the strip. The peeler roll also supports the strip at a point adjacent to the mill roll so as to preventsag, and permits the strip to be peeled from the mill roll by a pull on the strip substantially perpendicular to the mill roll. Advancing rolls pull the strip over the peeler roll substantially per-' pendicularly. with respectto the mill roll and the sharp curve the strip makes as it leaves the mill roll aids in severing the strip from the sheet. The self-aligning bearings are supported by a frame which may be swunginto operative position with respect to the mill ormay be swung to one side to provlde. access to the mill;

A complete understanding oi the invention mounted on rods-o! whicha rod 82, 1816110,-

vention;

- Fi 2 is a vertical section taken along line 2-2 h of Fig. 1;

Fig. 3 is an enlarged. fragmentary, vertical I section taken along line 3-3 0! Fig. 2;

Fla. 4 is a horizontal section taken. along line 4-4 oi. Fig. 1, and i Fig. 5-is an enlarz dv vertical section taken along line H of P18. .1. 1

Referring now in detail to' the drawings, a strip i0 (Fig. 2) is cut from a sheet ll of material by a stripper l2, and is advanced from the stripper by a pair of advancing rolls lS-ll. .The sheet II is formed from a mass or compoundon a roll mill having mill rolls, of which a millroll I8 is shown. The mill roll It lsrotated continuously in a counterclockwise direction, as viewed in Fig. 2, and the sheet II is iormed thereon- A frame I! of the stripper'is mounted plvotally .on a bracket 20 secured to an end frame lS-ot the mill, and may be secured by anovercenter latch 2| in an operative position indicated by the letter A (Fig. 4) in which position the frame is parallel with the mill roll I. The stripper also may be moved to an inoperative position indicated by the letter B to provide access to the mill. 1

, A pair of bearings 22-42 formed on brackets 23.43 secured tothe name It serve to support a" pintle 25. Levers 23-10- aremounted-on the is shown, secured to the upp rting-home. and

adjustable-retainers, ot which: an adjustable re-, 1

tainer 3| is shown. 1 The iadlusta ble'iretalners are which are plvota-lly secured .to the lower. ends of the levers 28-48. l l

The 'upper ends or the levers .li -llcarry selfaligning bearings "-45 (Fig. '3), which-support square ends 38-48 of a shaft Theshaft 3,8 is provided with tapped shoulders-"-81 1 on which are threaded nuts ll-Jl, which secure identical cutting discs 4 1-4 I against shoulders 1 "-42 formed on the shalt-l0. @The'. cutting discs.w li-ll are provided-with blunt cutting "edges, 43-1-43 .formed. thereon. and are, secured 1718161? to the shaft 38. ,BearingsM-r mountedon the shaft 36 mount a peeler roll 45 rotatabllz on the; halt, Thediameter oi the peeler-roll is,

ammo

v 3 by a distance than the diameter or the identical cutting discs so that the peeler roll limltsthedepthotcutoithecuttingdiscs.

In the operation of the apparatus described hereinabove, the sheet II is formed by the mill rolls i6li while the stripper I2 is in position B, in which position it does not interfere with an operator of the mill while milling the material. After the compound of which the sheet H is formed has been thoroughly worked by the mill. thestrippnisswungto positionA, andis latched in that position by the over-center latch 2!. In this position the levers "-28 are urged by the sprin s 21-21 in counterclockwise direcflms, as viewed in Fig. 2, and the cutting discs ll-ll and the peeler roll I! are pressed toward the mill roll I. The blunt cuttingdiscscutintothesheettosuchadepthas toleavetwormmttlflniilmsatpoiniisapredetermined distance apart. The operator severs the material transversely of the portion cut by thediscstofmmanendoithestrlnandfeeds the end of the strip to the advancing rolls IS-Ji. The advancing rolls pull the strip substantially erpendiculariy from the mill rcll II, which action is aided by the supporting action of the peelerrollli. Asthcstripisadvanced overthe peelerrolthcsh-ipisbentsharplyoutoithe planeotthedaeet ll aothatthethinfllms.which arebythecnttlngdiscs, areruptured.

The cutting discs 41-" are a predetermined amount larger in diameter than is the peeler roll II. Thnanrtionsofthesheet ll whichare not greater in thicknes the diflerence in their are cut by the cutting discs to form thestrip ll. 'l'hecuttingdiscsrotate ata peripheralspccdabontthesameasthatoi'the millroll iiastheycutthestripdrawnfrom thestrlppu-ovu-thcpcelerrollllwhichhas a difl'erent peripheral speed than thatot the cut- "than theothercndofthesbaiqtheshaitwill not remain papmdicnlar to the levers 26-26 on which it k mounted. However, the selfaliguingbeaflngslS-Iimovidetmiversalmovepeciallyimpll'tlntwherethecompoundisclosely adhcrmttothelnillmll. Thesharpbending of afterthemtflngollerationotthecuttingdiscs particular importance where the compound has a high specific gravity and is loosely adherent to the mill roll, with which type of compounds there would be defamation oi the strip and possible folding thereof in passing through the advancing rolls "-4! if the strip were not supported at the point it is drawn from the mill roll. During the severing operation. the pull of the advancing rolls iI-IB on the strip is substantially radial with respect to the mill roll It, and the supporting and guiding action of the small radius peeler l5 aids the cutting discs 4l4l in severing the sheet II to form the strip l0.

The stripper it serves to effectively cut the sheet ll into the strip l0 and is simple and etiective in its operation and construction. The peeler roll 45 serves to support the strip II! as it is formed and also serves to effectively gage the thicknes of the strip. The diiierent rates or speed of rotation between the discs 41- and the peeler roll II eliminate slipping of the strip II with respect to the cutting discs ll-4| and the peeler roll Ii. The stripper I: may be easily latched in its operative position to provide complete access to the mill. The blunt edges 43-43 of the cutting discs eiiectively sever the sheet by a pinching action and eliminate the danger of accidents, which danger accompanies the use oi sharp knives for cutting sheets into strips.

What is claimed is:

1. In an apparatus for cutting material including an abutment tor simporting a sheet of material and means for advancing a strip of materlal cut from a sheet or material supported by the abutment. a cutting device comprising a pair of spaced cutting elements, means for pressing the cutting eluneuts individually toward the abutment, and a roll positioned between the cutting elements and movable with the cutting elements toward the abutment.

2. In an apparatus for cutting material including an abutment for supporting a sheet of material and means for advancing from the abutment a strip cut from a sheet of material supported by the abutment, a device for cutting a strip oi a predetermined width from the sheet of material comprising a pair of cutting discs having a predetermined diameter and being spaced a predetermined distance apart. means for pressing the cutting discs individually toward the abutment, and means carried with the cutting discs for I the sheet 01' material to limit the depth of cut of the cutting discs.

3. In an apparatus for utting material including an abutment for supporting a sheet 0! material and means for advancing from the abutment a strip cut from a sheet of material supported by the abutment. a device for cutting a strip of a predetermined width from the sheet of material comprising a pair of cutting elements spaccda predetermined distance apart. a roll positioncd between the cutting elements, said cutting elements projecting a predetermined distance beyond the roll. and means for resiliently soutosqiuatetheltripi'romthercmsinderoi 75 prcssingthecuttlngelementsandtheroll toward the abutment, whereby portions of the sheet which are thicker than-said predetermined distance force the roll and thereby the cutting elements away from the abutment.

4. In an apparatus for cutting material including an abutment for supporting a sheet ofmaterial and means for advancing from the abutment a strip cut from a sheet of material supported by the abutment, a device for cutting a strip of a predetermined width from the sheet of material comprising a shaft, a. pair of cutting discs of a predetermined diameter mounted on the shaft, a cylinder mounted on the shaft between the cutting discs, said cylinder having a diameter a predetermined amount smaller than that of the cutting discs, a pair of self-aligning bearings for supporting the shaft, and means for c urging the bearings individually toward the abutment.

5. In an apparatus for cutting material including a movable abutment for supporting a sheet of material and means for advancing from the abutment a strip cut from a sheet of material supported by the abutment, a device for cutting a strip from the sheet of material comprising a pair of rotatable cutting discs, a roll positioned between the cutting discs, and means for mounting the roll for rotation relative to the cutting discs.

6. In an apparatus for cutting material including a movable abutment for supporting a sheet of material and means for advancing from the abutment a strip cut from a sheet of material supported by the abutment, a device for cutting a strip from the sheet of material comprising a shaft, a pair of cutting discs, a peeler roll, and means for mounting the peeler roll and the cutting discs for relative rotation on the shaft.

7. In an apparatus for cutting material including a movable abutment for supporting a sheet of material and means for advancing from" the abutment a strip cut from a sheet of material supported by the abutment, a device for cutting a strip from the sheet of material comprising a shaft, 9. pair of cutting discs secured rigidly to the shaft, and a peeler roll mounted rotatably on the shaft in a position between the cutting discs.

8. In an apparatus for cutting material including a movable abutment for supporting a sheet of material and means for advaneing'a strip of material out from a sheet of material supported ,by the abutment, a cutting device comprising a supporting frame, means for mounting the supporting frame pivotally so that it may be swung toward and away from the abutment, a plurality of spaced cutting elements supported by the supporting frame for cutting the sheet of ma terial at spaced points on the abutment. and means for forcing the cutting elements individually toward the abutment.

9. In an apparatus for cutting material including a movable abutment for supporting a sheet of material and means for advancing a strip of material cut from a sheet of material supported ally toward the abutment and for moving the peeler roll with the cutting elements.

anal-n 6 10. In an' apparatus for cutting material including a movable abutment for supporting a sheet of material and means for advancing from the abutment a strip cut from a sheet of material .supported by the abutment. a device for cutting a strip from the sheet of material comprising a shaft, a peeler roll mounted rotatably on theshaft, a pair of cutting discs mounted rigidly on the shaft, 9. pair of self-aligning bearings for supporting the shaft, a frame mounted for movement between a position adjacent to the abutment and a position away from the abutment, means for mounting the bearings on the frame and for permitting individual movement of each of the bearings with respect to the frame, and means for urging the bearings individually toward the abutment.

ii. In an apparatus for cutting material including a movable abutment for supporting a sheet of material and means for advancing from the abutment a strip cut from a sheet of material supported by the abutment. a device for cutting a strip of a predetermined width from the sheet of material comprising a shaft, a peeler roll having a diameter of a-predetermined size and mounted rotatably on the shaft, 9, pair of cutting discs mounted rigidly on the shaft a predetermined distance apart, said cutting discs having a diameter of a predeterminediy greater size than that of the peeler roll. a pair of selfaligning bearings for supporting the ends of the shaft, a frame mounted for pivotal movement between a position adjacent to the abutment and a position away from the abutment, means for locking the frame in its position adjacent to the abutment, means for mounting the hearings on the frame and for permitting individual movement of the bearings with respect to the frame. and means for urging the bearings individually toward the abutment.

12. In an apparatus for cutting material ineluding a movable abutment for supporting a sheet of material and means for advancing from the abutment a strip cut from a sheet of material supported by the abutment, a device for out-- ting a strip of a predetermined width from the sheet or material comprising a shaft, a peeler roll having a diameter of a predetermined size and mounted rotatably on the shaft, a pair of cutting discs mounted rigidly on the shaft a predetermined distance apart. said cutting discs having a diameter of a predeterminediy greater size than that of the peeler roll, a pair of selfaligning bearings for supporting the ends of the shaft. a supporting frame mounted for pivotal movement between a position adjacent to the abutment and a position away from the abutment, means for locking the frame in its position adjacent to the abutment, a pair of levers carried bythe supporting frame for carrying the self-aligning bearings on the ends thereof, and means for; urging the bearings individually toward the abutment.

13. A cutting device. which comprises a mill roll for forming a sheet of material thereon, a

pair of spaced cutting discs having a diameterof a predetermined size which is small'in comparison to that of the mill roll, a peeler roll having a diameter a predetermined size smaller than that of the cutting discs, means for rotatably mounting the peeler roll between the cutting discs, means for urging the peeler roll and the cutting discs toward the mill roll so that the cutting discs 'slit the sheet to form a strip, and means for pulling the strip over the peeler roll 7 8 in a direction substantially radially with respect tothemfllroll. STATES PATENTS VINCENT A. Number e M 1,963,179 Stace June 19 1934 REFERENCES CITED 8 2,394,859 Judelshon Feb.12:1946 The following references are of record In the 1,690,908 Preston Nov. 8, 1928 me 9f this patent: 1,258,185 Cameron Mar. 5, 1918 

